"...He is selling a product, and wants to make money. You can't make money if people don't buy your product.

Spring set under load is a myth. If it were true, you would have to replace the springs in your car every few thousand miles, but you don't..."

Your point is well taken. But you still have to consider the concept of quality control. If I don't have to replace my ISMI springs but every 2-3 yrs vs every year with the Wolff then I have saved some money and myself frustration. I would not knock it unless you've tried it. To suggest generalities about spring performance without taking into consideration ALL THE MANY variables involved is reckless and foolhardy. I don't think you can reasonably compare gun springs to automobile (let alone performance cars)springs. Just a different animal altogether.